EDMA requires the period size to be multiple of maxburst. Otherwise the
remaining bytes are not transferred and thus noise is produced.

We can handle this issue by adding a constraint on
SNDRV_PCM_HW_PARAM_PERIOD_SIZE to be multiple of tx/rx maxburst value.
Signed-off-by: NMihai Serban <mihai.serban@nxp.com>
Signed-off-by: NDaniel Baluta <daniel.baluta@nxp.com>
Acked-by: NNicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/20190913192807.8423-2-daniel.baluta@nxp.comSigned-off-by: NMark Brown <broonie@kernel.org>